Download file with ajax() POST request via Spring MVC

Question

I try to download a file. The action is triggered by ajax() POST request. The request sends data in JSON format to the controller. The controller gener

Answer 1

If you want download file without change URL, you can call form.submit() programmatically instead of using AJAX.

JavaScript:

function downloadFileUsingForm(url) { 
    var form = document.createElement("form");
    form.method = "post";
    form.action = url;
    document.body.appendChild(form);
    form.submit();
    document.body.removeChild(form);
}
downloadFileUsingForm("/YourController/DownloadFile");

Controller:

[HttpPost]
public ActionResult DownloadFile()
{
    string content = "Some Values";
    byte[] bytes = System.Text.UTF8Encoding.UTF8.GetBytes(content);
    return File(bytes, System.Net.Mime.MediaTypeNames.Application.Octet, "file.txt");
}